老年人的饮食中,吃动物油比植物油要好。
参考答案:错
属于社区和群体水平行为改变理论的是()
A.健康信念模式
B.创新扩散理论
C.阶段改变理论
D.理性行为理论
E.计划行为理论
He had to pause from time to time to wipe the sweat from his forehead, because the
air-conditioning system ____.[ ]
A. broke in
B. broke up
C. broke out
D. broke down